A group of tech-savvy teens stream their wild party online. But when Brie (Alice Darling) wakes up, she’s all alone. A sinister smiley message tells her that her friends are each trapped in separate boxes. They’ve all got their phones, but if anyone attempts to call the police or their parents, the penalty will be deadly.

A timid and reclusive 18-year-old high school student is alienated by her parents and ruthlessly rejected by her peers. Desperate and isolated, she confides in her own reflection — and in the mirror she finds her imagined evil twin, someone who supports her, encourages her and knows all her secret desires. When the “girls” trade places, repressed sexuality and a ferocious violence erupt with a dangerous sense of freedom.

After ten years, a group of high school friends reunite at their alma mater to dig up their old time capsule. When they open it, they make a pact to recreate all their best high school moments. Little do they realize the power of the time capsule to heal broken hearts and inspire newfound relationships.